How to Charge Eufy Lock

Charging your Eufy lock is simple and essential for uninterrupted smart home security. This guide walks you through the entire process—from identifying your model to safely recharging the battery—so you never get locked out due to a dead battery.

Key Takeaways

• Know your Eufy lock model: Different models (like the Eufy Security Smart Lock Touch, Solo Smart Lock, or Video Doorbell-integrated locks) have unique charging methods and battery types.
• Use only the recommended charger: Always use the USB-C or micro-USB cable and power adapter provided by Eufy to avoid damaging the battery or voiding the warranty.
• Charge before it’s fully drained: Recharge when the battery level drops to 20–30% to extend battery life and prevent unexpected lockouts.
• Monitor battery status via the Eufy app: The app sends low-battery alerts and shows real-time charge levels, helping you stay ahead of power issues.
• Keep the charging port clean: Dust or debris can interfere with charging—gently clean the port with a dry brush or compressed air.
• Have a backup access method ready: Use a physical key or temporary passcode in case the battery dies completely while charging.
• Charging takes 2–4 hours: Most Eufy locks reach full charge within a few hours—avoid overcharging by unplugging once complete.

How to Charge Eufy Lock: A Complete Step-by-Step Guide

Smart locks like those from Eufy make home security more convenient than ever. With features like fingerprint scanning, app control, and auto-locking, they offer peace of mind without the hassle of traditional keys. But like any electronic device, your Eufy lock runs on battery power—and that means you’ll need to charge it from time to time.

In this comprehensive guide, you’ll learn exactly how to charge Eufy lock safely and efficiently. Whether you own the Eufy Security Smart Lock Touch, the Solo Smart Lock, or another model, we’ll walk you through every step—from checking your battery level to troubleshooting common charging issues. By the end, you’ll know how to keep your smart lock powered, reliable, and ready to protect your home 24/7.

Why Charging Your Eufy Lock Matters

Imagine coming home after a long day, only to find your smart lock unresponsive because the battery died. That’s a frustrating—and potentially unsafe—situation no one wants to face. Regular charging ensures your Eufy lock stays operational, so you can enjoy seamless access via fingerprint, app, or keypad.

Beyond convenience, proper charging habits extend the lifespan of your lock’s rechargeable battery. Lithium-ion batteries, which most Eufy locks use, perform best when they’re not constantly drained to zero. Charging at the right time and using the correct equipment helps maintain battery health over the long term.

Plus, many Eufy locks come with low-battery warnings and backup power options, but these only work if you respond promptly. Knowing how to charge your Eufy lock means you’re always prepared—no more surprise lockouts or emergency calls to a locksmith.

Step 1: Identify Your Eufy Lock Model

Before you begin charging, it’s important to know which Eufy lock you have. Different models use different battery types and charging methods. Here are the most common ones:

• Eufy Security Smart Lock Touch: Features a built-in rechargeable battery and charges via USB-C. It also has a backup keyhole and emergency power port.
• Eufy Solo Smart Lock: Uses either a rechargeable battery pack or replaceable AA batteries, depending on the version. Some models support USB-C charging.
• Eufy Video Doorbell with Integrated Lock: Combines a doorbell camera with a smart lock. Charging may involve removing the entire unit or using a dedicated dock.
• Eufy Smart Lock S230 / S220: These models typically use a rechargeable lithium battery and charge through a hidden USB port on the interior side.

To confirm your model, check the label on the interior side of the lock, refer to your original packaging, or open the Eufy Security app. The app will display your device name and battery status under “Devices.”

Step 2: Check the Battery Level

Don’t wait until your lock stops working—monitor the battery regularly. The Eufy Security app is your best tool for this.

How to Check Battery in the Eufy App

1. Open the Eufy Security app on your smartphone.
2. Tap on your lock from the home screen.
3. Look for the battery icon—usually displayed as a percentage (e.g., 45%) or a visual bar.
4. If the battery is below 30%, it’s time to charge.

The app also sends push notifications when the battery is low. You might see alerts like “Battery Low: Please charge soon” or “Critical Battery: Charge immediately.” Heed these warnings to avoid being locked out.

Some Eufy locks also have LED indicators on the device itself. For example, a red light may flash when the battery is critically low, while a green or blue light indicates normal operation.

Step 3: Gather the Right Charging Equipment

Using the wrong charger can damage your lock or reduce battery life. Always use the equipment recommended by Eufy.

Recommended Charging Gear

• USB-C or micro-USB cable: Most newer Eufy locks use USB-C; older models may use micro-USB. Use the cable that came with your lock.
• 5V/1A or 5V/2A power adapter: A standard phone charger works fine. Avoid fast chargers (like 9V or 12V) unless specified by Eufy.
• Power source: Plug into a wall outlet, not a computer USB port, for faster and more reliable charging.

Pro Tip: Keep your charging cable in a designated spot near your door or in a drawer so you can find it quickly when needed.

Step 4: Locate the Charging Port

The charging port is usually hidden to maintain the lock’s sleek design and weather resistance. Here’s where to look:

For Eufy Smart Lock Touch and Similar Models

• The USB-C port is located on the interior side of the lock, near the bottom.
• You may need to remove a small rubber cover or slide a panel to access it.
• Some models have a magnetic cover that pops off with gentle pressure.

For Eufy Solo Smart Lock (Battery Pack Version)

• The charging port is on the removable battery pack itself.
• Remove the battery from the lock by sliding it out from the bottom.
• Plug the USB cable directly into the battery pack.

For Video Doorbell-Integrated Locks

• You may need to detach the entire unit from the mounting plate.
• Look for a charging dock or port on the back or bottom of the device.
• Follow the manufacturer’s instructions for safe removal and reattachment.

Safety Note: Always turn off the lock or disconnect it from power (if possible) before handling internal components. If you’re unsure, consult the user manual or contact Eufy support.

Step 5: Connect and Begin Charging

Once you’ve located the port and gathered your gear, it’s time to charge.

Step-by-Step Charging Process

1. Plug the USB cable into the lock’s charging port.
2. Connect the other end to your power adapter and plug it into a wall outlet.
3. Check for a charging indicator—usually a blinking LED light (often red or orange).
4. Leave the lock connected for 2 to 4 hours. Most models reach full charge within this time.
5. Once fully charged, the LED may turn solid green or stop blinking.
6. Unplug the cable and replace any covers or panels.

Example: If your Eufy Smart Lock Touch shows a red blinking light when plugged in, that means it’s charging. When the light turns solid green, it’s ready to go.

Step 6: Confirm the Charge in the App

After charging, verify that the battery level has increased.

How to Confirm Charging Success

1. Open the Eufy Security app.
2. Navigate to your lock’s device page.
3. Check the battery percentage—it should now read 80% or higher.
4. Test the lock by unlocking it via the app, fingerprint, or keypad to ensure it’s functioning normally.

If the battery percentage hasn’t changed or the lock still won’t respond, there may be a charging issue—see the troubleshooting section below.

Tips for Maintaining Battery Health

Good charging habits go a long way in keeping your Eufy lock reliable.

Best Practices

• Charge at 20–30%: Don’t wait until the battery is nearly dead. Regular top-ups reduce wear on the battery.
• Avoid extreme temperatures: Don’t charge your lock in very hot or cold environments. Ideal charging temperature is between 32°F and 95°F (0°C to 35°C).
• Use original cables: Third-party cables may not deliver the correct voltage or current.
• Clean the charging port: Use a dry toothbrush or compressed air to remove dust every few months.
• Store spare batteries properly: If your model uses replaceable batteries, keep spares in a cool, dry place.

Real-World Tip: Set a monthly reminder on your phone to check your lock’s battery level. This simple habit can prevent unexpected issues.

Troubleshooting Common Charging Issues

Sometimes, charging doesn’t go as planned. Here’s how to fix the most common problems.

Issue 1: Lock Won’t Charge

Possible Causes: Dirty port, faulty cable, dead adapter, or battery failure.

Solutions:

• Clean the charging port gently with a dry brush.
• Try a different USB cable and power adapter.
• Test the outlet with another device to confirm it’s working.
• If none of these work, the battery may need replacement—contact Eufy support.

Issue 2: Battery Drains Too Fast

Possible Causes: Frequent use, weak Wi-Fi signal, or firmware issues.

Solutions:

• Reduce unnecessary app notifications or auto-unlock features.
• Ensure your lock is within range of your Wi-Fi router or home base station.
• Update the lock’s firmware via the Eufy app.
• Check for physical obstructions (like a misaligned door) that cause the lock to work harder.

Issue 3: Charging Light Doesn’t Turn On

Possible Causes: Loose connection, damaged port, or software glitch.

Solutions:

• Unplug and reconnect the cable firmly.
• Try charging from a different outlet.
• Restart the lock by removing and reinserting the battery (if removable).
• Reset the lock via the app if the issue persists.

Issue 4: Lock Beeps or Flashes Red After Charging

This usually indicates a low battery or charging error.

Solutions:

• Ensure the lock is fully charged (wait at least 4 hours).
• Check for app updates or sync issues.
• Perform a factory reset as a last resort (back up settings first).

What to Do If the Battery Dies Completely

Even with careful charging, batteries can sometimes die unexpectedly. Here’s how to regain access:

Emergency Access Options

• Use the physical key: Every Eufy lock comes with a traditional key for backup. Keep it in a secure but accessible place (like a lockbox or with a trusted neighbor).
• Emergency power port: Some models (like the Smart Lock Touch) have a 9V battery terminal on the exterior. Touch a 9V battery to the contacts to temporarily power the lock.
• Temporary passcode: If you’ve set up a one-time passcode in the app, use it to unlock the door.
• Call Eufy support: They may be able to remotely assist or guide you through a reset.

Important: Never force the lock open or attempt to disassemble it yourself. This can cause permanent damage and void your warranty.

How Often Should You Charge Your Eufy Lock?

Battery life varies by model and usage, but most Eufy locks last 6 to 12 months on a single charge under normal conditions.

Factors that affect battery life include:

• Frequency of use (e.g., unlocking multiple times per day)
• Weather conditions (cold weather reduces battery efficiency)
• Wi-Fi connectivity (weak signals cause the lock to work harder)
• Enabled features (like live video or frequent app notifications)

As a general rule, check the battery level every 2–3 months. If you notice faster drain, investigate potential causes like signal interference or mechanical issues.

Final Thoughts: Stay Powered, Stay Secure

Knowing how to charge Eufy lock is a small but crucial part of owning a smart home. With regular maintenance, the right tools, and a little attention, you can keep your lock running smoothly for years.

Remember: Charge before it’s critical, use the correct equipment, and always have a backup plan. Your smart lock is designed to make life easier—don’t let a dead battery undo that convenience.

By following this guide, you’re not just charging a device—you’re protecting your home, your family, and your peace of mind. So plug in, power up, and enjoy the smart security you deserve.